Note 14 - Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Aug. 27, 2023	May 28, 2023
Derivative assets	$ 8.0	$ 10.0
Deferred compensation assets	6.8	7.1
Available-for-sale debt securities	4.0	4.0
Total assets	18.8	21.1
Derivative liabilities	2.6	3.6
Deferred compensation liabilities	69.6	67.0
Total liabilities	72.2	70.6
Fair Value, Inputs, Level 1 [Member]
Derivative assets	7.8	9.4
Deferred compensation assets	6.8	7.1
Available-for-sale debt securities	0.0	0.0
Total assets	14.6	16.5
Derivative liabilities	0.0	0.0
Deferred compensation liabilities	69.6	67.0
Total liabilities	69.6	67.0
Fair Value, Inputs, Level 2 [Member]
Derivative assets	0.2	0.6
Deferred compensation assets	0.0	0.0
Available-for-sale debt securities	0.0	0.0
Total assets	0.2	0.6
Derivative liabilities	2.6	3.6
Deferred compensation liabilities	0.0	0.0
Total liabilities	2.6	3.6
Fair Value, Inputs, Level 3 [Member]
Derivative assets	0.0	0.0
Deferred compensation assets	0.0	0.0
Available-for-sale debt securities	4.0	4.0
Total assets	4.0	4.0
Derivative liabilities	0.0	0.0
Deferred compensation liabilities	0.0	0.0
Total liabilities	$ 0.0	$ 0.0